x
<html><body> $x = 75;$y = 25; function addition() { $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];}addition();echo $z;</body></html>
100
<html><body> $x = 75;$y = 25; function addition() { $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];}addition();echo $z;</body></html>